Flu shots: Especially important if you have heart disease

    If you have heart disease, a flu shot can reduce your risk of flu complications. Learn the benefits of a flu shot and when to get one.

    The flu is an infection of the nose, throat and lungs. It is a type of respiratory infection caused by a virus. Another name for the flu is influenza. The flu spreads easily from person to person. That means it's contagious.

    If you have heart disease, take steps to protect yourself against the flu. Complications from the flu are more likely in people with heart disease.

    You can reduce your risk of flu and its complications by getting a yearly flu vaccine. Healthcare professionals have long recommended the vaccine for older adults and other people at high risk, including those with heart disease.

    Why are flu shots important for those with heart disease?

    If you have heart disease, it's important to get a flu shot. People with heart disease are more likely to have complications from the flu., These complications may include:

    • Pneumonia.
    • Bronchitis.
    • Lung failure.
    • Heart attack.

    Having the flu also can make heart failure, diabetes, asthma or other health conditions worse.

    Healthcare professionals continue to study the benefits and risks of yearly flu vaccines among people with heart disease, including people with heart failure. Some studies show that getting a yearly flu shot lowers the risk of heart attack, stroke and heart-related death in those with heart disease. But more studies are needed.

    Is the flu shot safe if I have heart disease?

    Flu shots are safe for most people who have heart disease.

    The nasal spray flu vaccine (FluMist) is not recommended for people with heart disease or for people age 50 and older. Unlike the flu shot, the nasal spray flu vaccine is made with a live virus.

    The flu shot is usually given in the upper arm. Some people have side effects such as mild soreness at the injection site, muscle aches or low fever. These side effects don't last long. You can't get the flu or coronavirus disease 2019 (COVID-19) from a flu vaccine.

    Check with your healthcare professional before getting a flu shot if:

    • You have or think you have COVID-19.
    • You had a serious allergic reaction to the flu vaccine in the past.
    • You got Guillain-Barre syndrome after getting a flu shot.
    • You have a fever.

    You can get a flu shot if you're allergic to eggs.

    When should I get a flu shot?

    The Centers for Disease Control and Prevention recommends that everyone age 6 months and older get a yearly flu vaccine. Adults age 65 and older should get a high-dose flu vaccine if available.

    It's best to get a flu shot in September or October. But you can get a flu shot until January or sometimes later.

    It's so important for people with heart disease to get a flu vaccine. A flu shot could reduce symptoms that might be confused with those caused by COVID-19. But the flu vaccine does not prevent COVID-19.

    If you live with or care for someone who has heart disease, get a yearly flu vaccine too. Doing so helps lower the risk of the flu for you and those around you.

    Do I have to get a flu shot from my cardiologist?

    You don't have to get your flu shot from your heart doctor. The flu shot is available at most medical offices, public health departments and some pharmacies. Call first to see if the flu vaccine is available and if you need an appointment.

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    2. Behrouzi B, et al. Influenza vaccination to reduce cardiovascular morbidity and mortality in patients with COVID-19: JACC state-of-the-art review. Journal of the American College of Cardiology. 2020; doi:10.1016/j.jacc.2020.08.028.
    3. Why adults with heart disease need an annual flu vaccine. National Foundation for Infectious Diseases. https://www.nfid.org/why-adults-with-heart-disease-need-an-annual-flu-vaccine. Accessed July 27, 2026.
    4. Balasubramani GK, et al. Relative effectiveness of high dose versus standard dose influenza vaccines in older adult outpatients over four seasons, 2015-16 to 2018-19. Vaccine. 2020; doi:10.1016/j.vaccine.2020.08.011.
    5. Grohskopf LA, et al. Prevention and control of seasonal influenza with vaccines: Recommendations of the Advisory Committee on Immunization Practices — United States, 2022-23 influenza season. MMWR Recommendations and Reports. 2022; doi:10.15585/mmwr.rr7101a1.
    6. Song JY, et al. Effectiveness of influenza and pneumococcal polysaccharide vaccines against influenza-related outcomes including pneumonia and acute exacerbation of cardiopulmonary diseases: Analysis by dominant viral subtype and vaccine matching. PLOS One. 2018; doi:10.1371/journal.pone.0207918.
    7. AskMayoExpert. Influenza vaccination. Mayo Clinic; 2026.
    8. Get your flu shot today. American Heart Association. https://www.heart.org/en/health-topics/flu-prevention. Accessed July 27, 2026.
    9. Modin D, et al. Influenza vaccine in heart failure. Circulation. 2019; doi:10.1161/CIRCULATIONAHA.118.036788.
    10. Frobert O, et al. The flu shot and cardiovascular protection: Rethinking inflammation in ischemic heart disease. Atherosclerosis. 2026; doi:10.1016/j.atherosclerosis.2025.120405.
    11. Maniar YM, et al. Influenza vaccination for cardiovascular prevention: Further insights from the IAMI trial and an updated meta-analysis. Current Cardiology Reports. 2022; doi:10.1007/s11886-022-01748-8.
    12. Behrouzi B, et al. Association of influenza vaccination with cardiovascular risk: A meta-analysis. JAMA Network Open. 2022; doi:10.1001/jamanetworkopen.2022.8873.

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